SIZE: It’s pretty early in life when children learn the difference between things that are big and small.

Yet there are some things in life that are just so huge that it’s tough to contemplate.

We talked about the size of a billion and a trillion recently.

Today we’re going to talk about some giant stuff that exists in the world.

The biggest building in the world is the Boeing Factory in Everett, Washington.

It’s 472 million cubic feet. Tough to picture?

It could fit 75 football fields. Or all of Disneyland with room to spare. Or 2,100 average American homes.

The factory has its own fire department, medical clinic, security force, electrical plant and water treatment plant.

General Sherman has the distinction of being the biggest tree.

The sequoia in Three Rivers, California, is 275 feet tall and more than 36 feet wide. It’s considered the largest living organism on Earth by volume.

That’s roughly 26 stories tall, like the

Rand Building in

Buffalo, N.Y.

The biggest animal is, of course, the blue whale. In the North Atlantic and North Pacific, blue whales can grow to about 90 feet long and weigh more than 100,000 pounds. In the Antarctic, they can be even bigger — about 110 feet and weigh more than 330,000 pounds.

That’s the weight of about 18 pickup trucks for the northern whales, and about 60 for the southern whales. Ninety feet long is roughly seven to eight stories, or three school buses lined up end-to-end.

What about 110 feet?

It’s a 10-story building, or the height of the Statue of Liberty from her feet to her crown.

That’s one big fish (yes, we know it’s a mammal, we’re going for humor here, folks).